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Q: Which number is a prime factor of both 63 and 140?

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140

Prime factors of 140=2x2x5x7.

140 70,2 35,2,2 7,5,2,2

140 70,2 35,2,2 7,5,2,2

No, 7 is a factor of 140. Factors go into numbers, numbers go into multiples.

10

No. It is an even number, divisible by 2, and is not prime.

They are not relatively primeNo. To be relatively prime they could only have the number 1 as a common factor, but they have other common factors.

No. 140 isn't prime. The prime factorization of 140 is 2 x 2 x 5 x 7

composite

2 x 2 x 5 x 7 = 140

2 x 2 x 5 x 7 = 140

141

140

140 is a composite number because it is an even number greater than 2.

To find the GCF of two numbers, you first need to break them down into their prime factors. For 140 and 252, these are: 140 = 2x2x5x7 252 = 2x2x3x3x7 The next step is to identify common prime factors. In this case, both numbers have two 2s and a 7 in their prime factors. To find the GCF, we simply multiply these common prime factors together: 2x2x7 = 28. Thus the greatest common factor of 140 and 252 is 28.

The prime factors are: 2 x 2 x 5 x 7

it is 14

149 is the only prime number betweeen 140 and 150.

It is: 2*2*5*7 = 140 by dividing it by each prime number that has no remainder

It is 7 because as a product of its prime factors: 2*2*5*7 = 140 or as 22*5*7 = 140

(140) = 2 * (70) (70) = 2 * (35) (35) = 5 * 7 Prime factors of 140: 2,2,5 and 7

That is easy, 140 is prime.

The greatest common factor can be calculated by identifying the common prime factors and multiplying them together. The prime factors of 140 are 2, 2, 5, and 7. The prime factors of 168 are 2, 2, 2, 3, and 7. The prime factors they have in common are 2, 2, and 7, so their greatest common factor is 2 x 2 x 7 = 28. Another way to approach this is to look at the difference between 140 and 168, which is 28. The greatest common factor of two numbers cannot be larger than the difference between the two numbers. Since both 140 and 168 are divisible by 28, the greatest common factor is 28.

The HCF of both numbers is 20